package demo13_StreamCalculate;

import java.util.ArrayList;
import java.util.Arrays;

/**
 * @author kunkun
 * @className Test_StramCalc
 * 现在有5个用户!筛选:
 * 1、ID 必须是偶数
 * 2、年龄必须大于23岁
 * 3、用户名转为大写字母
 * 4、用户名字母倒着排序
 * 5、只输出一个用户
 * @date 2025/3/6 21:31
 */
public class Test_StramCalc {
    public static void main(String[] args) {
        User u1 = new User( 1,"a",21);
        User u2 = new User( 2,"b",22);
        User u3 = new User( 3,"c",23);
        User u4 = new User( 4,"d",24);
        User u5 = new User( 6,"e",25);
        //筛选
        ArrayList<User> users = new ArrayList<User>(Arrays.asList(u1,u2,u3,u4,u5));
        users.stream().filter(u->{return u.getId()%2==0;})
                .filter(u->{return u.getAge()>23;})
                .map(u->{return u.getName().toUpperCase();})
                .sorted((uu1,uu2)->{return uu2.compareTo(uu1);})
                .limit(1)
                .forEach(System.out::println);
    }
}
